Ventilated vacuum commutation structure



FIG. 1 is a perspective view of a ventilated vacuum commutation structure;

FIG. 2 is a top view of the ventilated vacuum commutation structure;

FIG. 3 is a bottom view of the ventilated vacuum commutation structure;

FIG. 4 is a first side view of the ventilated vacuum commutation structure; and,

FIG. 5 is a second side view of the ventilated vacuum commutation structure. 

CLAIM We claim the ornamental design for a ventilated vacuum commutation structure, as shown and described. 